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Puzzles & Computer
Puzzles with squares


Puzzles with only square pieces may seem quite easy, but size does matter!
Other math. puzzles


Jigsaw puzzles are popular among young and old. When pieces have a mathematical shape they may give a bigger challenge.
Sudoku


Sudoku puzzles became very popular over the last decade. Here are some hints for beginners.
Mazes and Labyrinths


You can use the computer to solve puzzles, but also to create them!
Here is a small selection of mazes, made by a computer program.
Backtracking algorithms


How to use a computers to solve a problem in an intelligent way, or make it search to the optimal solution?
Nature images
Wild Orchids

orchideeën pagina
Tropical, cultivated orchids are very familiar ... often at our own windowsill. They also live in the wild and even in the cooler zones. There exist more species than you'd think, but you'll rarely find any.
Butterflies

duinparelmoervlinder
Butterflies are symbolic for positive emotions of people. Unfortunately many species of butterflies are vulnarable for changes in their environment.

Music
Music in 7/4 rythm

We all know the rythm of seven days in a week ... in music it sounds like this
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